Gökhan Toğuşlu

Cohort-level discrepancy between observed and model-based pedicle screw loosening risk: an exploratory aggregate-data evaluation of the explanatory gap index

Published pedicle screw loosening (PSL) cohorts differ substantially in observed event rates, predictor measurement, surgical context, and outcome ascertainment. We evaluated whether an aggregate discrepancy index can describe how far an observed cohort result lies from a common...